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  <title>Fetch all the SNMP objects from an agent</title>
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  <div id="layout-content"><div id="function.snmp2-walk" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">snmp2_walk</h1>
  <p class="verinfo">(PHP &gt;= 5.2.0)</p><p class="refpurpose"><span class="refname">snmp2_walk</span> &mdash; <span class="dc-title">Fetch all the <acronym title="Simple Network Management Protocol">SNMP</acronym> objects from an agent</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.snmp2-walk-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>snmp2_walk</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$host</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$community</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$object_id</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$timeout</code><span class="initializer"> = 1000000</span></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$retries</code><span class="initializer"> = 5</span></span>
  ]] ) : <span class="type">array</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>snmp2_walk()</strong></span> function is used to read all the values from
   an <acronym title="Simple Network Management Protocol">SNMP</acronym> agent specified by the <code class="parameter">hostname</code>.
  </p>
 </div>

 
 <div class="refsect1 parameters" id="refsect1-function.snmp2-walk-parameters">
  <h3 class="title">参数</h3>
  <dl>

   
    <dt>
<code class="parameter">host</code></dt>

    <dd>

     <p class="para">
      The SNMP agent (server).
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">community</code></dt>

    <dd>

     <p class="para">
      The read community.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">object_id</code></dt>

    <dd>

     <p class="para">
      If <strong><code>NULL</code></strong>, <code class="parameter">object_id</code> is taken as the root of
      the <acronym title="Simple Network Management Protocol">SNMP</acronym> objects tree and all objects under that tree are returned as
      an array.
     </p>
     <p class="para">
      If <code class="parameter">object_id</code> is specified, all the <acronym title="Simple Network Management Protocol">SNMP</acronym> objects
      below that <code class="parameter">object_id</code> are returned.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">timeout</code></dt>

    <dd>

     <p class="para">
      The number of microseconds until the first timeout.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">retries</code></dt>

    <dd>

     <p class="para">
      The number of times to retry if timeouts occur.
     </p>
    </dd>

   
  </dl>

 </div>

 
 <div class="refsect1 returnvalues" id="refsect1-function.snmp2-walk-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns an array of <acronym title="Simple Network Management Protocol">SNMP</acronym> object values starting from the
   <code class="parameter">object_id</code> as root or <strong><code>FALSE</code></strong> on error.
  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-function.snmp2-walk-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-5569">
    <p><strong>Example #1 <span class="function"><strong>snmp2_walk()</strong></span> Example</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$a&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">snmp2_walk</span><span style="color: #007700">(</span><span style="color: #DD0000">"127.0.0.1"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"public"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">""</span><span style="color: #007700">);<br /><br />foreach&nbsp;(</span><span style="color: #0000BB">$a&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$val</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"</span><span style="color: #0000BB">$val</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
  <p class="para">
   Above function call would return all the <acronym title="Simple Network Management Protocol">SNMP</acronym> objects from the
   <acronym title="Simple Network Management Protocol">SNMP</acronym> agent running on localhost. One can step through the values
   with a loop
  </p>
 </div>

 
 <div class="refsect1 seealso" id="refsect1-function.snmp2-walk-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="snmp2_real_walk.html" class="function" rel="rdfs-seeAlso">snmp2_real_walk()</a> - Return all objects including their respective object ID within the specified one</span></li>
   </ul>
  </p>
 </div>

 
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